If your recommendation algorithm always recommends B when it sees A, and I derive this information from exfiltrating your masked data , is it not theft simply because I didn’t unmask the true identity of A and B?

Stole all other important information embedded in the relationship (the essence of the relationship itself).

This is not seen as theft to only two or three types of people:

1) Technically ignorant

2) Or Technically ignorant and morally bankrupt

3) Truly evil, a combination of technically capable, and morally bankrupt.

(An “Abomination” is also possible, unaware and unable to perceive morality , not just mere ignorance. For example, it is tremendously generous to call an Abomination ignorant or amoral, that’s a compliment to such a thing. Would Jensen Huang know about the words coming out of his mouth, is the true question really.)